Update html5ever to 0.27

.github/workflows/main.yml

@@ -14,7 +14,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        rust: ["1.66.0", "stable", "beta"]
+        rust: ["stable", "beta"]
         build_flags: ["", "--cfg ammonia_unstable"]
         os: [ubuntu-latest]
     steps:
@@ -28,11 +28,29 @@ jobs:
         env:
           RUSTFLAGS: ${{ matrix.build_flags }}
 
+  msrv:
+    name: MSRV
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        build_flags: ["", "--cfg ammonia_unstable"]
+    steps:
+      - uses: actions/checkout@master
+      - name: Set toolchain
+        run: |
+          rustup set profile minimal
+          rustup override set 1.60.0
+      - name: Check
+        run: cargo check --lib --all-features
+        env:
+          RUSTFLAGS: ${{ matrix.build_flags }}
+
   ci-success:
     name: ci
     if: ${{ success() }}
     needs:
       - test
+      - msrv
     runs-on: ubuntu-latest
     steps:
       - name: CI succeeded

Cargo.toml

@@ -9,15 +9,16 @@ readme = "README.md"
 documentation = "https://docs.rs/ammonia/"
 repository = "https://github.com/rust-ammonia/ammonia"
 categories = [ "web-programming", "text-processing" ]
-edition = "2018"
+edition = "2021"
+rust-version = "1.60"
 
 [dependencies]
-html5ever = "0.26"
+html5ever = "0.27"
 maplit = "1.0"
 tendril = "0.4"
 url = "2"
 once_cell = "1.10"
 
 [dev-dependencies]
 version-sync = "0.9"
-env_logger = "0.10"
+env_logger = "0.10" # env_logger 0.11 requires MSRV 1.70 even for a dev-dep due to Cargo metadata

README.md

@@ -2,7 +2,7 @@ HTML Sanitization
 =================
 
 [![Crates.IO](https://img.shields.io/crates/v/ammonia.svg)](https://crates.io/crates/ammonia)
-![Requires rustc 1.60.0](https://img.shields.io/badge/rustc-1.66.0+-green.svg)
+![Requires rustc 1.60.0](https://img.shields.io/badge/rustc-1.60.0+-green.svg)
 
 Ammonia is a whitelist-based HTML sanitization library. It is designed to
 prevent cross-site scripting, layout breaking, and clickjacking caused